bob costas of nbc spoke out about this. let's watch what he said tonight. >> i believe that there should be more comprehensive and effective controls on the sale of guns. roughly 40% of the guns purchased in this country do not require a background check for purchasing. i don't see any reason why someone should be able to purchase military style or body armor or weapons. only the police and the military should have that. >> let's start off. you've been giving me a holler on twitter about this. you are a big gun fan. explain to me why bob costas is wrong? >> it boils down to the ability to protect yourself, piers. when you look at what is what happening in syria with the threat of chemical weapons. the only reason they're not going to use it is because somebody else, the u.s., has a similar threat of using a similar weapon. as a gun owner, you have to be able to protect yourself. if you are damaged and you are willing to take somebody else's life. that comes down to that person is not going to obey the gun laws. they are goi